What minimum speed must it have at the top of the loop

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A small object slides along the frictionless loop-the-loop with adiameter of 3m. What minimum speed must it have at the top of the loop?
A. 1.9m/s
B. 3.8m/s
C. 5.4m/s
D. 15m/s
E. 29m/s

Reference no: EM13646831

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